论文标题
LHC运行期间的爱丽丝拟合数据处理和性能3
ALICE FIT data processing and performance during LHC Run 3
论文作者
论文摘要
在即将到来的3次运行3中，在LHC上运行4期间，升级的爱丽丝（一个大离子对撞机实验）将以明显更高的发光度运行，并将收集两个数量级的事件比Run 1和运行2。Alice升级的一部分是新的快速相互作用触发器（FIT）。该彻底重新设计的检测器将Alice在LHC运行2：T0，V0，FMD和AD期间使用的四个正向检测器的功能结合在一起。拟合将监视光度和背景，向LHC提供反馈，并实时产生最小偏见，顶点和中心性触发器。在离线分析期间，拟合数据将用于提取飞行时间（TOF）粒子识别所需的精确碰撞时间。在重型离子碰撞期间，拟合还将确定多重性，中心性和事件平面。旨在在连续和触发读数模式下运行的拟合电子设备。在这些程序中，简要描述了拟合模拟，软件和原始数据处理。但是，主要重点是探测器性能，触发效率，碰撞时间和中心度分辨率。
During the upcoming Run 3 and Run 4 at the LHC the upgraded ALICE (A Large Ion Collider Experiment) will operate at a significantly higher luminosity and will collect two orders of magnitude more events than in Run 1 and Run 2. A part of the ALICE upgrade is the new Fast Interaction Trigger (FIT). This thoroughly redesigned detector combines, in one system, the functionality of the four forward detectors used by ALICE during the LHC Run 2: T0, V0, FMD and AD. The FIT will monitor luminosity and background, provide feedback to the LHC, and generate minimum bias, vertex and centrality triggers, in real time. During the offline analysis FIT data will be used to extract the precise collision time needed for time-of-flight (TOF) particle identification. During the heavy-ion collisions, FIT will also determine multiplicity, centrality, and event plane. The FIT electronics designed to function both in the continuous and the triggered readout mode. In these proceedings the FIT simulation, software, and raw data processing are briefly described. However, the main focus is on the detector performance, trigger efficiencies, collision time, and centrality resolution.
